King of Spain, posthumous son of Alfonso XII of Spain, was proclaimed King at his birth. He reigned from 1886–1931. Partly-printed DS, in Spanish, signed “Alfonso,” one page, 9 x 14, June 1, 1906. An untranslated letter of state to Ismael Montes, President of Bolivia. In very good condition, with central horizontal and vertical fold, trimmed left edge, punch holes to left edge, and some scattered light toning. RRAuction COA.
